Patents by Inventor Kazuo Sugimoto

Kazuo Sugimoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130177076
    Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.
    Type: Application
    Filed: July 21, 2011
    Publication date: July 11, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto
  • Publication number: 20130114700
    Abstract: When generating a prediction image of a color difference signal, an intra prediction unit 4 carries out an intra prediction process on a target block to be encoded of a color difference signal by using the same intra prediction parameter as that which the intra prediction unit 4 uses when carrying out an intra prediction process on a target block to be encoded of a luminance signal, or carries out the intra prediction process on the target block to be encoded of the color difference signal by applying an average prediction to the target block to be encoded. A variable length encoding unit 13 variable-length-encodes a flag showing whether the intra prediction unit 4 uses the same intra prediction parameter as that used for the luminance signal.
    Type: Application
    Filed: July 7, 2011
    Publication date: May 9, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshimi Moriya, Shunichi Sekiguchi, Kazuo Sugimoto, Ryoji Hattori
  • Patent number: 8369404
    Abstract: Encoding and decoding are uniformly carried out for a plurality of chroma formats. Based on a control signal for providing a chroma format type of an input moving image signal, in the case of a chroma format of 4:2:0 or 4:2:2, a first intra prediction mode deciding unit and a first intra prediction image generation unit are applied to a luminance component of the input moving image signal, and a second intra prediction mode deciding unit and a second intra prediction image generation unit are applied to a chrominance component. In the case of a chroma format of 4:4:4, the first intra prediction mode deciding unit and the first intra prediction image generation unit are applied to all color components to carry out encoding, and a variable length encoding unit multiplexes the control signal as encoding data to be applied to a moving image sequence unit on a bit stream.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: February 5, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Yoshimi Moriya, Kazuo Sugimoto, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Publication number: 20130028326
    Abstract: An encoding controlling unit 3 selects one transformation block size which provides an optimal degree of encoding efficiency from a set of transformation block sizes which are determined in accordance with an encoding mode 7, and includes the transformation block size selected thereby in optimal compression parameters 20a to notify the transformation block size to a transformation/quantization unit 19, and the transformation/quantization unit 19 divides an optimal prediction differential signal 13a into blocks having the transformation block size included in the optimal compression parameters 20a, and carries out a transformation and quantization process on each of the blocks to generate compressed data 21.
    Type: Application
    Filed: March 31, 2011
    Publication date: January 31, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshimi Moriya, Shunichi Sekiguchi, Kazuo Sugimoto, Kohtaro Asai, Tokumichi Murakami
  • Publication number: 20130022124
    Abstract: Disclosed is an image encoding device which is constructed in such a way as to include an encoding mode determining unit 4 for evaluating the degree of efficiency of encoding of a difference image A which is the difference between an image of a macroblock to be encoded, and a prediction image A generated by a motion-compensated prediction unit 2 in a motion prediction mode A, and also evaluating the degree of efficiency of encoding of a difference image B which is the difference between the image of the macroblock to be encoded, and a prediction image B generated by the motion-compensated prediction unit 2 in a motion prediction mode B, and for selecting a difference image having a higher degree of encoding efficiency.
    Type: Application
    Filed: March 7, 2011
    Publication date: January 24, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Yusuke Itani, Kazuo Sugimoto, Yoshihisa Yamada
  • Patent number: 8320462
    Abstract: The present invention makes it possible to include, when encoding processing is applied to three color components using a 4:0:0 format, data for one picture in one access unit and makes it possible to set the same time information or the same set encoding modes among the respective color components. In an image encoding system for applying compression processing to an input image signal including a plurality of color components, encoded data obtained by independently subjecting an input image signal of each of the color components to encoding processing and a parameter indicating which color component the encoded data corresponds to are multiplexed with a bit stream. In an image decoding system for inputting a bit stream in which an image signal including a plurality of color components is compressed to perform decoding processing, decoding processing of the encoded data of each of the color components is performed using a parameter indicating which color component the encoded data corresponds to.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: November 27, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Yoshimi Moriya, Kazuo Sugimoto, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuuichi Idehara
  • Patent number: 8306112
    Abstract: The present invention makes it possible to include, when encoding processing is applied to three color components using a 4:0:0 format, data for one picture in one access unit and makes it possible to set the same time information or the same set encoding modes among the respective color components. In an image encoding system for applying compression processing to an input image signal including a plurality of color components, encoded data obtained by independently subjecting an input image signal of each of the color components to encoding processing and a parameter indicating which color component the encoded data corresponds to are multiplexed with a bit stream. In an image decoding system for inputting a bit stream in which an image signal including a plurality of color components is compressed to perform decoding processing, decoding processing of the encoded data of each of the color components is performed using a parameter indicating which color component the encoded data corresponds to.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 6, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Yoshimi Moriya, Kazuo Sugimoto, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Patent number: 8300694
    Abstract: The present invention makes it possible to include, when encoding processing is applied to three color components using a 4:0:0 format, data for one picture in one access unit and makes it possible to set the same time information or the same set encoding modes among the respective color components. In an image encoding system for applying compression processing to an input image signal including a plurality of color components, encoded data obtained by independently subjecting an input image signal of each of the color components to encoding processing and a parameter indicating which color component the encoded data corresponds to are multiplexed with a bit stream. In an image decoding system for inputting a bit stream in which an image signal including a plurality of color components is compressed to perform decoding processing, decoding processing of the encoded data of each of the color components is performed using a parameter indicating which color component the encoded data corresponds to.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 30, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Yoshimi Moriya, Kazuo Sugimoto, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Patent number: 8300700
    Abstract: The present invention makes it possible to include, when encoding processing is applied to three color components using a 4:0:0 format, data for one picture in one access unit and makes it possible to set the same time information or the same set encoding modes among the respective color components. In an image encoding system for applying compression processing to an input image signal including a plurality of color components, encoded data obtained by independently subjecting an input image signal of each of the color components to encoding processing and a parameter indicating which color component the encoded data corresponds to are multiplexed with a bit stream. In an image decoding system for inputting a bit stream in which an image signal including a plurality of color components is compressed to perform decoding processing, decoding processing of the encoded data of each of the color components is performed using a parameter indicating which color component the encoded data corresponds to.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 30, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Yoshimi Moriya, Kazuo Sugimoto, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Publication number: 20120269450
    Abstract: The image encoding apparatus of one embodiment of the present invention comprises a coding mode determination unit, a prediction image generation unit, a storage unit, and an encoding unit. The coding mode determination unit determines a coding mode relating to which of the first image prediction processing or second image prediction processing is used for generating prediction image of a partial area of input images. The prediction image generation unit extracts the prediction assist information by the first image prediction processing and generates a prediction image based on the prediction assist information. The storage unit stores the reproduced image that is based on the prediction image. The encoding unit generates a bit stream comprising data obtained by encoding the coding mode information and prediction assist information.
    Type: Application
    Filed: July 3, 2012
    Publication date: October 25, 2012
    Applicant: NTT DoCoMo, Inc.
    Inventors: CHOONG SENG BOON, Kazuo Sugimoto
  • Patent number: 8265405
    Abstract: A variable-length encoder that feeds a Coded Block Pattern (CBP) as an input symbol to variable-length code output part. Coded symbol memory supplies CBPs in neighboring blocks as coding map table reference information to coding map table provider. Coding map table provider determines a coding map table used in coding of the CBP, based on these CBPs in the neighboring blocks, and provides a coding map table H4 to variable-length code output part. Variable-length coding table provider feeds a variable-length coding table to variable-length code output part. Then the coding target CBP is subjected to variable-length coding, and the resultant is outputted as coded data. This allows information source coding of coding symbols to be performed efficiently according to the coding condition and the property of image.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: September 11, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kazuo Sugimoto, Satoru Adachi, Sadaatsu Kato, Minoru Etoh, Mitsuru Kobayashi, Hiroyuki Yamaguchi
  • Patent number: 8238426
    Abstract: The image encoding apparatus of one embodiment of the present invention comprises a coding mode determination unit, a prediction image generation unit, a storage unit, and an encoding unit. The coding mode determination unit determines a coding mode relating to which of the first image prediction processing or second image prediction processing is used for generating prediction image of a partial area of input images. The prediction image generation unit extracts the prediction assist information by the first image prediction processing and generates a prediction image based on the prediction assist information. The storage unit stores the reproduced image that is based on the prediction image. The encoding unit generates a bit stream comprising data obtained by encoding the coding mode information and prediction assist information.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: August 7, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Choong Seng Boon, Kazuo Sugimoto
  • Patent number: 8218812
    Abstract: A digital watermark embedding device according to the present invention includes: a watermark pattern generation part (4) which generates a watermark pattern varying in a time direction based on embedding information to be embedded in an input image to be processed; a synchronization pattern generation part (3) which outputs a fixed pattern for detecting synchronization as a watermark pattern; a pattern switching part (5) which selects between the watermark pattern output by the synchronization pattern generation part (3) and the watermark pattern output by the watermark pattern generation part (4) based on the input image (7a); and an embedding processing part (6) which adds the selected watermark pattern to each pixel value of the input image (7a) to generate an embedded image (7c) having a digital watermark embedded therein.
    Type: Grant
    Filed: May 28, 2007
    Date of Patent: July 10, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuo Sugimoto, Ryousuke Fujii, Hiroshi Ito, Mitsuyoshi Suzuki
  • Patent number: 8189687
    Abstract: A data embedding apparatus including: a selecting unit for selecting, based upon the second data, a prediction system of calculating a prediction value with respect to data to be processed within the first data; a predicting unit for calculating the prediction value of the data to be processed by the prediction system selected by the selecting unit; a difference calculating unit for calculating a prediction error of the data to be processed by employing the prediction value; and a prediction error calculating unit for outputting the coded data, in which the predicting unit includes: a 0-embedding time predicting unit for performing prediction when a bit value of the second data is “0”; a 1-embedding time predicting unit for performing prediction when the bit value of the second data is “1”; and an embedding end time predicting unit for performing prediction when embedding of the second data is accomplished.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: May 29, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuo Sugimoto, Shunichi Sekiguchi, Yuichi Idehara, Yoshihisa Yamada, Yoshiaki Kato, Kohtaro Asai
  • Publication number: 20120106630
    Abstract: A variable-length encoder that feeds a Coded Block Pattern (CBP) as an input symbol to variable-length code output part. Coded symbol memory supplies CBPs in neighboring blocks as coding map table reference information to coding map table provider. Coding map table provider determines a coding map table used in coding of the CBP, based on these CBPs in the neighboring blocks, and provides a coding map table H4 to variable-length code output part. Variable-length coding table provider feeds a variable-length coding table to variable-length code output part. Then the coding target CBP is subjected to variable-length coding, and the resultant is outputted as coded data. This allows information source coding of coding symbols to be performed efficiently according to the coding condition and the property of image.
    Type: Application
    Filed: January 11, 2012
    Publication date: May 3, 2012
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuo SUGIMOTO, Satoru ADACHI, Sadaatsu KATO, Minoru ETOH, Mitsuru KOBAYASHI, Hiroyuki YAMAGUCHI
  • Patent number: 8165392
    Abstract: The present invention makes it possible to include, when encoding processing is applied to three color components using a 4:0:0 format, data for one picture in one access unit and makes it possible to set the same time information or the same set encoding modes among the respective color components. In an image encoding system for applying compression processing to an input image signal including a plurality of color components, encoded data obtained by independently subjecting an input image signal of each of the color components to encoding processing and a parameter indicating which color component the encoded data corresponds to are multiplexed with a bit stream. In an image decoding system for inputting a bit stream in which an image signal including a plurality of color components is compressed to perform decoding processing, decoding processing of the encoded data of each of the color components is performed using a parameter indicating which color component the encoded data corresponds to.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 24, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Yoshimi Moriya, Kazuo Sugimoto, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Publication number: 20120093427
    Abstract: A quantizing matrix selecting part 3 for calculating the average and variance of brightness values in a prediction image created by a motion-compensated prediction unit 1, and selecting a quantizing matrix corresponding to the average and variance of brightness values in the prediction image from among a plurality of quantizing matrices which are prepared in advance is disposed, and a quantizing part 6 quantizes orthogonal transformation coefficients outputted from an orthogonal transformation part 5 with reference to the quantizing matrix selected by the quantizing matrix selecting part 3.
    Type: Application
    Filed: May 25, 2010
    Publication date: April 19, 2012
    Inventors: Yusuke Itani, Kazuo Sugimoto, Shunichi Sekiguchi, Akira Minezawa, Yoshimi Moriya, Norimichi Hiwasa, Shuichi Yamagishi, Yoshihisa Yamada, Yoshiaki Kato, Kohtaro Asai, Tokumichi Murakami
  • Publication number: 20120087595
    Abstract: A loop filter 6 includes a region classifying unit 12 for extracting a feature quantity of each of the regions which construct a local decoded image to classify each of the regions into the class to which the region belongs according to the feature quantity, and a filter designing and processing unit 13 for, for each class to which one or more regions, among the regions which construct the local decoded image, belong, generating a Wiener filter which minimizes an error occurring between an inputted image and the local decoded image in each of the one or more regions belonging to the class to compensate for a distortion superimposed onto the one or more regions by using the Wiener filter.
    Type: Application
    Filed: May 25, 2010
    Publication date: April 12, 2012
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akira Minezawa, Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Yoshimi Moriya, Norimichi Hiwasa, Shuichi Yamagishi, Yoshihisa Yamada, Yoshiaki Kato, Kohtaro Asai, Tokumichi Murakami
  • Publication number: 20120082213
    Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal 5 does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.
    Type: Application
    Filed: May 27, 2010
    Publication date: April 5, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Akira Minezawa, Yoshiaki Kato
  • Publication number: 20120076203
    Abstract: A compressing unit 6 of a video encoding device selects whether or not to transform and quantize a prediction error signal 5 after a downsampling processing unit 36 performs a reduction transformation on the prediction error signal 5 by using a transforming process determining unit 31, and then creates quantization coefficient data 7a or 7b. When the compressing unit creates the quantization coefficient data 7b, a local decoding unit located behind the compressing unit inverse-quantizes and inverse-transforms the quantization coefficient data 7b, and, after that, an upsampling processing unit performs an enlargement transformation on the quantization coefficient data to create a decoded prediction error signal.
    Type: Application
    Filed: May 27, 2010
    Publication date: March 29, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazuo Sugimoto, Shunichi Sekiguchi, Yusuke Itani, Akira Minezawa, Shuichi Yamagishi